Tatu Syvänen

AI-based defect detection and self-healing in metal additive manufacturing

Jan Sher Akmal, Kevin Minet-Lallemand, Jukka Kuva, Tatu Syvänen et autres

This pilot study develops a process to evaluate in-situ defect detection and self-healing in Ti-6Al-4V fabricated using laser-based powder bed fusion. A tailor-made test specimen was designed and manufactured for the nanofocus tube X-ray computed tomography (XCT) system. In situ optical tomography …

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Understanding microstructure and properties evolution in additively manufactured CuCrZr alloy to obtain a high-performance material

Valentina Candela, Marialaura Tocci, Gloria Ischia, Francesca Valentini et autres

CuCrZr is one of the most interesting copper-based alloys due to the combination of high conductivity and mechanical properties. In this work, the material was additively manufactured through Laser Powder Bed Fusion (LPBF) technology. Two machines were used to investigate the influence …

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Effects of micro-sized TiC on the cracking behavior of additively manufactured tungsten

Silvia Candela, Juhani Ottelin, Janne Hongisto, Hanna Lehtonen et autres

In this study, the effects of the addition of TiC micro-sized particles on the printability of tungsten via Laser-Based Powder Bed Fusion are presented. Micrographic analyses were carried out on pure tungsten and W-TiC samples to study the evolution of the microstructure. …

Lasersko sintranje orodja za tlačno litje aluminija

Slavko Dolinšek, P. Panjan, Tatu Syvänen

In this paper some results from using a DMLS (direct metal laser sintering) rapid-tooling solution for aluminum die-casting are presented. The product chosen for the investigation was a car safety-belt strap winder (an application for the automotive industry), and according to the …

Preliminary characterization of phenomena occurring during single track fabrication in laser additive manufacturing of stainless steel

Ville‐Pekka Matilainen, Heidi Piili, Antti Salminen, Tatu Syvänen et autres

Laser additive manufacturing (LAM) is a layer wise fabrication technology which enables the production of complex shaped, individually designed parts with mechanical properties comparable to conventionally manufactured parts. However, the part manufacturing is relatively slow and via this whole production feasibility is …

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Characterization of Process Efficiency Improvement in Laser Additive Manufacturing

Ville Matilainen, Heidi Piili, Antti Salminen, Tatu Syvänen et autres

Laser additive manufacturing (LAM) enables production of complex parts with good mechanical properties. Nevertheless, part manufacturing is still relatively slow and the process efficiency could be improved to achieve total breakthrough into series production. In this study, the process efficiency improvements via …

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Direct Metal Laser Sintering – New Possibilities in Biomedical Part Manufacturing

Juha Kotila, Tatu Syvänen, Jouni Hänninen, Maria Latikka et autres

This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where …

Direct Metal Laser Sintering – New Possibilities in Biomedical Part Manufacturing

Juha Kotila, Tatu Syvänen, Jouni Hänninen, Maria Latikka et autres

Direct Metal Laser Sintering (DMLS) has been utilized for prototype manufacturing of functional metal components for years now. During this period the surface quality, mechanical properties, detail resolution and easiness of the process have been improved to the level suitable for direct …

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DMLS and Manufacturing

Olli Nyrhilä, Juha Kotila, Maria Latikka, Jouni Hänninen et autres

Direct Metal Laser Sintering (DMLS) has been used for manufacturing prototypes, functional metal components and prototype tools for more than 10 years. During this period the technology has advanced to a level where direct production of complex metallic parts for various applications …

Laser-sintered tools for the die-casting of aluminum | Lasersko sintranje orodja za tlačno litje aluminija

Slavko Dolinšek, P. Panjan, Tatu Syvänen, J. Ramovš

Diode pumped fiber laser in direct metal laser sintering (DMLS) process

Tatu Syvänen, Martin Heugel, Robert Domröse

Direct Metal Laser Sintering (DMLS) is a layered process that enables the fabrication of complex net-shape mold inserts and metal components directly from 3D CAD data. The new generation machine EOSINT M270 was announced late 2003 and introduced to the market in …

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Rapid Manufacturing with Direct Metal Laser Sintering

J-E. Lind, Jouni Hänninen, Juha Kotila, Olli Nyrhilä et autres

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